Northrop Grumman, a premier aerospace and defense technology company, is seeking a Principal/Senior Principal Software Engineer specializing in GUI development. This role requires an active TS/SCI clearance and will be based in Fairfax, VA. As a leading defense contractor, Northrop Grumman offers the opportunity to work on cutting-edge technology projects that directly impact national security. The position involves developing sophisticated graphical user interfaces for mission-critical applications. The role combines advanced software engineering with security clearance requirements, making it an unique opportunity for experienced GUI developers who want to contribute to national defense projects. The company's strong market position, excellent benefits, and commitment to innovation make this an attractive opportunity for senior software engineers looking to advance their careers in a stable, mission-driven environment.